Puppet-valve.



; R. MILLER.

PUPPET VALVE.

APPLICATION FILED JUNE 17. 1915.

1,242,576. I I Patented Oct. 9,1917.

ROBERT on NEW Yon'n, iv. Y.

PUPPET-VALVE.

To all whom it may concern Be it knowngthat 1, ROBERT MILLER, a citizen of the" United States, residingv at-rNew York, in the county of New York and State of New York, have invented certain new useful Improvements in Puppet-Valves,

of which, the following. is aspecification,

reference being had therein to the accon'rpanying drawing.

My present invention relates to certain.

new and useful improvements in puppet valves of" the type commoniyemployed connection with steam engines, air com-' pressors, pumps of various kinds; internal combustion engines,- eX-plosive motors used in automobiles and the like,- and various" other species of mechanismbr apparatus; A- puppet valve as ordinarily constructed having a member attache'dtoa stern, which member moves back andforth with relation to a seat, is usually very much restricted as regard'sits port-area, since'in order to* open widely and give a large port area a very highlifting of the valve is required, while on the other hand too" reat a diameter for the valve or the'use of a plurality of valves results in considerable noise and often times'a very objectionable leakage; The object of my invention is to avoid these commonly noted defects in valves of the puppet type and with a given size ofvalve provide greater port areawith nozincrease in leakage, thus improving the construction,

operation and effectiveness-0f a ValVeIOf a given size over what is posslble Wlth the same valveas not constructed with my im' proved features besides enabling theoperation' of the valve to be less noisy than heretofore. The invention comprises numerous' details and peculiarities in the con struction, combination and arrangementof the various parts, substantially as will be hereinafter described and then more particularly pointed out in the claims.

In the accompanying drawings illustrating my invention:

Figure 1 is a vertical section of my improved puppet valve as it appears when lifted from its seat, but with the ports not yet opened.

Fig. 2 is a similar vertical section showing the valve wide open and the ports likewise in coincidence.

Similar characters of reference designate corresponding parts throughout the differentfigures of the drawing.

Specification of Letters Patent.

valve 2 having an inclined face 16, which moves toward and away from the seat 5 m the closing'and opening movements of the valve: The valve 2 is carried by a's'tem 3 which reciproc'ates through a boss 11*; on

theinn'er' wall ofthe' chanrber 1 Stem 3 is actuated by red 12 having anti-friction roller 13 incontact with which is a cam. 1 f on the main shaft 15 of the engine; it being'obvious thatthe rotation of the cam reciprocates the rod 12 and thereby acts on the valve stem 3 and moves said stem back and forth with relation to its seat 5.

The valve 210m its inner side below the inflange or skirt 6 which is formed with a Patentedflct. e; 1917. Application fii'e'a June 17, 1915: sentiment-572'. I

series of lateral ports'or openings 7. The

skirt 6 lies between the wall of the chamber t at a pointconti'guous to the seat'5'and -a stationary sleeve 8, which is supported of the arms 9 projecting fromthe internally screw-threaded collar IO'which screws upon the boss 11 which affords: a bearin-gfor the stem 3-. Thusth'e stationary sleeve 8 is so' i carried that the contents-of the chamber L4 may pass freely between the supports 9 and in the interior ofthesleeve' 8 and above the same so as to be 111 contact w1th-th'ei inside of the valve well as filling all the space throughout the chamber 4.

' The reciprocatin movementof the valve 52' causes' its skirt 6 to play back and forth between the stationary sleeve 8 and the seat When the valve 2 is closed, its inclined face 16 will be in contact with the seat 5 and obviously the ports 7 will be closed because they will be on the side of the seat 5 toward the interior of the chamber t. When the valve opens and the'inclined face 16 lifts away from the seat 5, the valve will pass into the position shown in Fig. 1, and the skirt 6 will prevent any connection between the interior of the chamber 4 and the opening between the face 16 and seat 5 until a point is reached where the skirt 6 passes the seat 5 and allows an inlet 'to take place under the edge of the skirt 6, and as the outward movement of the valve 2 continues this space will grow larger, as shown in Fig. 2,

and at the same time another opening will be and into the space between face 16 and seat 5, so that a much greater increase in the area of the inlet is permitted by.the employment of the ports 7.

In those cases where it is desirable to positively operate the valve, the stem 3 will be brought into contact with the cam follower 12, but when the valve is not to be posi tively operated the follower 12 need not, of course, be used. lhe contour of the cam 14 is such that the follower rod 12 and the stem 3 may be accelerated slowly at first until the valve 2 reaches the position shown in Fig. 1. The continued movement of the cam finally brings the valve into the position shown in Fig. 2, which is the full open position where the skirt on the valve 2 so registers with reference to the seat 5 and the inner sleeve 8 that the fluid may pass simultaneously below the edge of the skirt 6 and through the ports 7 The closing operation will be exactly the reverse to that just described for the opening.

Many changes in the precise form and eX act character of the various parts may be made without exceeding the scope of my invention, or changing its essential character, and I, therefore, reserve the liberty of so varying and rearranging the details as may be found necessary in carrying the invention into actual practice.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A puppet valve for internal combustion seat, between which ring and the seat the skirt moves.

3. A puppet valve, provided with an apertured skirt, in combination with a valve casing and a seat thereon for the valve, and

a stationary ring or sleeve within said casing opposite to the seat, said ring being so located that when the apertured skirt lifts above it an opening will be established between the valve casing and the outside thereof simultaneously with the opening of the passage between the valve and its seat.

4. A puppet valve for internal combustion engines having a face and a port-provided skirt adjacent to said face, in combination with a seat for said valve, and an inner stationary sleeve between which and the seat the said skirt has a range of motion.

5. Ina puppet valve for internal co1nbustion engines, the combination of a head and area-increasing means, said head acting to protect said area-increasing means at critical periods in a cycle, and opening when such periods have passed, so that said areaincreasing means can function.

6. A puppet valve, provided with an apertured skirt in combination with acasing and a valve seat, and a ring within said we ing, said ring being so located that when the skirt lifts above it an opening will be made between the valve casing and the outside thereof at the same time the valve lifts from its seat. p

In testimony whereof I aflix my signature.

ROBERT MILLER.

@opiea of this patent may be obtained for five cents each,.by addressing the Commissioner of Patents,

Washington, D. (3. 

